Thanks!icherouveim wrote: ↑Apr 08 2019 11:04amHello there,
Yes the threat is the following if you want to see more info:
https://endless-sphere.com/forums/viewt ... 14&t=88373
This battery pack has worked very well for more than two years (it's not dead yet but it sags a lot).
The reason I want to try 21700 40T cells is the extra power and here is why.
At the boost mode my controller draws 115amps and the cells stress a lot, actually they were working almost at their maximum rating for all this time.
So If I manage to install a 20S 7P pack made by 40T cells then each cell will have to deliver only 16.5A which is perfect because this cell can deliver up to 25A continuous and 35A for short bursts.
I believe this pack is going to last much more.
When I decide to change battery I will let you know!
This is exactly what I was after. Now it looks like I'm probably going to be going back to 18650's and copying your pack design.
In terms of the 20700's designs, here's what I came up with so far: The top left pack will fit easiest, but two of those may be a challenge to fit length wise. So I think the best option would be a combination of the top left pack with the bottom left design. This would obviously be contingent on the bottom left design fitting height wise. Otherwise the bottom right option would have to do.
What do you all think?